This study investigates the use of MnxOy/Al2O3 and Pt/Al2O3 catalysts for decomposition hydrogen peroxide in thrusters. It describes purpose, procedures, performance, conclusions coming from test campaign catalyst lifetimes. In particular, eight different propellant samples with two were tested twice (in order to exclude uncertainty). Similar operating starting conditions applied. All hot tests...

a range of some iranian monofloral honeys were assayed for antibacterial activity with and without hydrogen peroxide which is inactivated by the addition of catalase. i t was found that the high amount of antibacterial activity in honeys was due to a factor other than hydrogen peroxide. the test microorganism staphylococcus aureus, was not inhibited by the acidity or the osmolarity of the honey...

The Bray-Liebhafsky (BL) oscillatory reaction generated in the batch reactor at 6268 C was perturbed by cobalt(II)-nitrate, supported on the macroreticular copolymer of poly-4-vinylpyridine with divinylbenzene (Co-PVPDVB). The kinetic data was analyzed of the complex pathways of the hydrogen peroxide decomposition in the examined BL reaction. The obtained results confirm that the kinetics of th...

Kinetic study of peroxidase-catalyzed oxidation of 3-(10'-phenothiazinyl)propane-1-sulfonate (SPTZ) by hydrogen peroxide demonstrated that the addition of 4-dialkylaminopyridines to a substrate solution significantly increased a rate of production of SPTZ cation radical and did not affect the rate of decomposition of this radical. These results explain the mechanism of action of 4-dialkylaminop...

Abstract Oxidation of kraft pulp using hydrogen peroxide under mild acidic conditions can be applied in order to obtain new functionality the fibres, form carbonyl groups. The concentration must, however, higher than consumed by oxidation reactions meaning that liquid must recirculated fully utilize peroxide. This paper investigates consequences recirculation liquor. It was found results an acc...

Under anaerobic conditions an exponentially growing culture of Escherichia coli K-12 was exposed to hydrogen peroxide in the presence of various compounds. Hydrogen peroxide (0.1 mM) together with 0.1 mM L-cysteine or L-cystine killed the organisms more rapidly than 10 mM hydrogen peroxide alone. The exposure of E. coli to hydrogen peroxide in the presence of L-cysteine inhibited some of the ca...

*Corresponding Author: [email protected] Abstract In this work, a new method was developed for the catalytic reduction of hydrogen peroxide at glassy carbon electrode modified with silver nanoparticles and multi-wall carbon nanotubes. Silver incorporated in this modified electrode acted as catalyst to reduce hydrogen peroxide. First, the electrochemical behavior of silver, incorporated in m...

M in ne ap ol is , M N 5 54 47 VAPORIZED PERACETIC ACID (VPA) STERILIZATION Peracetic Acid as a Biocide REVOXTM sterilization technology uses a room temperature vapor composed of three active compounds; hydrogen peroxide (H2O2), acetic acid and peracetic acid (PAA). PAA is formed by the reaction of acetic acid and H2O2 with the addition of a catalyst; these compounds exist in equilibrium and th...

The overproduction of hydrogen peroxide is implicated in the progress of numerous life-threatening diseases and there is a great need for the development of contrast agents that can detect hydrogen peroxide in vivo. In this communication, we present a new contrast agent for hydrogen peroxide, termed peroxalate micelles, which detect hydrogen peroxide through chemiluminescence, and have the phys...

Diammonium carbonate hydrogen peroxide monosolvate, 2NH(4)(+)·CO(3)(2-)·H(2)O(2), (I), and dicaesium carbonate hydrogen peroxide trisolvate, 2Cs(+)·CO(3)(2-)·3H(2)O(2), (II), were crystallized from 98% hydrogen peroxide. In (I), the carbonate anions and peroxide solvent molecules are arranged on twofold axes. The peroxide molecules act as donors in only two hydrogen bonds with carbonate groups,...